A sample of gas has a volume of 2.00 L and pressure of 0.750 kPa when its temperature is 250 C. If the volume is expanded to 4.00 L and the pressure reduced to 0.500 kPa, what must the temperature become?

Fission of uranium-235 products energy and a. isotopes of smaller elements b. isotopes of larger elements c. lighter isotopes of uranium d. heavier isotopes of uranium

What is the mass of 4 molecules of co2

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out